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# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
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#   http://www.apache.org/licenses/LICENSE-2.0
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import json
from datetime import date, datetime

import numpy as np

try:
    from kubernetes.client import models as k8s
except ImportError:
    k8s = None

# Dates and JSON encoding/decoding


class AirflowJsonEncoder(json.JSONEncoder):
    """
    Custom Airflow json encoder implementation.
    """

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.default = self._default

    @staticmethod
    def _default(obj):
        """
        Convert dates and numpy objects in a json serializable format.
        """
        if isinstance(obj, datetime):
            return obj.strftime('%Y-%m-%dT%H:%M:%SZ')
        elif isinstance(obj, date):
            return obj.strftime('%Y-%m-%d')
        elif isinstance(obj, (np.int_, np.intc, np.intp, np.int8, np.int16,
                              np.int32, np.int64, np.uint8, np.uint16,
                              np.uint32, np.uint64)):
            return int(obj)
        elif isinstance(obj, np.bool_):
            return bool(obj)
        elif isinstance(obj, (np.float_, np.float16, np.float32, np.float64,
                              np.complex_, np.complex64, np.complex128)):
            return float(obj)
        elif k8s is not None and isinstance(obj, k8s.V1Pod):
            from airflow.kubernetes.pod_generator import PodGenerator
            PodGenerator.serialize_pod(obj)

        raise TypeError(f"Object of type '{obj.__class__.__name__}' is not JSON serializable")
